板料多点成形中基于NURBS曲面拓展的压边过渡面设计  

Blending Surface Design Based on NURBS for Blank Holder in Multi-point Forming

作　　者：彭林法[1] 金隼[1] 来新民[1] 李明哲[2] 

机构地区：[1]上海交通大学,上海200030 [2]吉林大学,长春130025

出　　处：《中国机械工程》2005年第13期1217-1221,共5页China Mechanical Engineering

基　　金："十五"国家科技攻关项目(2001BA203B11);国家863高技术研究发展计划资助项目(2003AA411210)

摘　　要：研究了基于非均匀有理B样条(NURBS)的曲面拓展方法,结合多点成形设备的特点,开发了板料多点成形压边过渡面设计系统。实现了曲面柔性拓展和曲面桥接拓展两种不同的压边过渡面设计。这两种压边过渡面的设计算法效率高、适应性好,生成的过渡曲面与原曲面达到G2连续。This paper presented two methods for NURBS surface extension, and combining with the characteristics of MPF, the blank holder blending surface system of Multi-Point Forming was designed. Two design methods of blending surface were proposed: 1) flexible surface extension; 2) surface bridge extension. These two algorithms are both effective and reliable, and the continuity of the blending surface designed by these methods can reach G2.

关 键 词：多点成形 NURBS曲面 过渡面 压边 板料 非均匀有理B样条 G^2连续 成形设备 设计系统 算法效率 过渡曲面 适应性 

分 类 号：TP391.72[自动化与计算机技术—计算机应用技术] TG386.41[自动化与计算机技术—计算机科学与技术]